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System Sensor 2151 Photoelectric Low-Profile Plug-In Smoke Detector

SKU: 2151 System Sensor
System Sensor 2151 Photoelectric Low-Profile Plug-In Duct Smoke Detector
Product images for System Sensor 2151 Photoelectric Low-Profile Plug-In Smoke Detector. 4 image(s) available. Click on image to view full size.

Key Features

  • Low-profile, plug-in design simplifies installation and preserves ceiling aesthetics for commercial spaces
  • Photoelectric optical sensing chamber detects smoldering fires early, reducing false alarms and improving safety monitoring
  • Compatible with System Sensor B114LP/B114LPBT bases and 24V/120V supplies for flexible integration with existing control panels
  • Removable cover, insect screen and twist-out head enable fast on-site maintenance and cleaning to minimize downtime
  • Meets UL 268 and supports NFPA 72 field sensitivity metering for regulatory compliance and reliable security system performance
  • 360° visible LEDs provide clear status indication for quick visual verification during inspections and monitoring

Quick Specifications

Brand Name
System Sensor
Manufacturer
Honeywell International, Inc
Product Name
2151 Smoke Detector
Product Type
Smoke Detector
View Full Technical Specifications

Product Information Tabs

Overview

Designed for reliable open-area protection, the System Sensor 2151 Photoelectric Low-Profile Plug-In Smoke Detector delivers early detection of smoldering fires while keeping installation and maintenance straightforward. The advanced optical sensing chamber provides superior detection of slow-burning smoke—a common challenge in commercial and industrial environments—helping building managers and security teams reduce false alarms and improve overall fire monitoring. At just 2" high, the low-profile design preserves ceiling aesthetics and installs quickly into standard electrical boxes or System Sensor B114LP/B114LPBT bases, supporting 24V and 120VAC installations for flexible integration with existing control panels. The 2151 is UL 268 listed and supports NFPA 72 field sensitivity metering, making it suitable for code-compliant security and fire detection systems. Service-minded features—like a removable cover, insect screen, and twist-out detector head—cut maintenance time and keep systems operational with minimal disruption. Ideal for open areas, ducts with low air flow, and commercial HVAC-adjacent installations, the 2151 is a dependable choice for security, surveillance, and building monitoring programs. Contact sales or add to your next specification to enhance fire detection reliability.

Features

  • Low-profile, plug-in design simplifies installation and preserves ceiling aesthetics for commercial spaces
  • Photoelectric optical sensing chamber detects smoldering fires early, reducing false alarms and improving safety monitoring
  • Compatible with System Sensor B114LP/B114LPBT bases and 24V/120V supplies for flexible integration with existing control panels
  • Removable cover, insect screen and twist-out head enable fast on-site maintenance and cleaning to minimize downtime
  • Meets UL 268 and supports NFPA 72 field sensitivity metering for regulatory compliance and reliable security system performance
  • 360° visible LEDs provide clear status indication for quick visual verification during inspections and monitoring
General Information
Brand Name System Sensor
Manufacturer Honeywell International, Inc
Product Name 2151 Smoke Detector
Product Type Smoke Detector
Product Model 2151
Package Length 4.400000000
Product Series 100
Manufacturer Part Number 2151
Technical Information
Sensor Type Photoelectric
Detectable Medium Fire
Sensing Technology Photoelectric
Connectivity Technology Wired
Certifications
UL Listed Yes
Controls/Indicators
Status Indicators Yes
Environmental Conditions
Operating Relative Humidity (H-H) 10-93%
Physical Characteristics
Color White
Height 2"
Weight 3.10oz
Form Factor Ceiling Mount
Power Description
Power Source AC, DC
Input Voltage 35V DC
Product Information
Mount Type Ceiling Mount
Warranty
Limited Warranty 3-Year
Miscellaneous
Features Built with a low-profile construction, cleaning, Compatible with Gamewell-FCI control panels, Designed with a feature, Has an screening (020"/.508 mm, Includes a Test Switch, Offers an easy plug-in of the head to base, openings), Provides a removable insect screen and cover for field, Shows a 360° view angle of the alarm LEDs, Supports the field metering of detector sensitivity, Uses an audible sounder base (optional)
Compatibility Control Panels
Certifications UL 268
Country of Origin MX